Spring-hinge



(No'ModeL) V H. W. LIBBEY.

SPRING HINGE. I

UNITED STATES PATENT. OFFICE.

HQSEA LIBBEY, OF BOSTON, llIASSAOIIUSE'ITS SPRING- HINGE.

SPECIFICATION forming part of Letters Patent 1%.

Application filed June 26, 1889.

426,597, dated April 29, .1890.

seen No. 315,616. (No model.)

the accompanying drawings, is a specification.

My invention relates to that class of hinges known as spring-hinges and is particularly adapted for what are known as butt-hinges, and the invention consists in inserting a flat.

, 'tached.

spring into the leaves o'fi thehinge, as hereinafter fully set forth, and pointed out in the claims.

Referring Figure 1 is.

to the accompanying drawings, a, plan or top View of a spring ,butt hinge embodying, my invention, showing it in the closed position. view of the samein the open position. 3 'isa perspective view Fig.4.is a view Fig. 2 is a front Fig. of the spring doof a hinge inthe open positionwith a modified for-m of spring.

spring detached.

Fig.. 5 is a plan or top view of the same in the' closed position. 6 is an edge view of the Fig. 7 is :a view of a hinge with the spring in the center, and-also shows the leaves of the hinge halved out instead of grooved to receive the spring' 3 A A represent the two leaves of thehi-nge, B, the pintle and O the screw-holes. In the leaves, I cut or-forma grooveor recess at the top,-'as shown in Fig. 1, into which recess I inserta fiatsteel spring D. This springI prefer to make of greater Width at the ends than the central portion, and in each end I form a slot (Z, through each ofwhich one of the screws pass that secure the hinge to-the door orbox. The object of the slot d is to allow for the movement of theT'spr'ing'upon the screw when the hinge is being opened or closed.

desired,- a similar spring may also he employed at thelower end or in the center of the hinge.

In Figs. 4 to 7 I have shown the spring attached to a short tube (1' pintle B. In Fig. 4 two' of these springs are shown, one at the top and oneat the bottom, and they are lotinto grooves or reeesses in the leaves, as described, with reference to Fig. 2, andin Fig 7 I have shown one spring before described. I have also shown in Fig. 7 a spring at the top, which is simply laid onto the leaves, which are halved out, as shown, to re: ceive'the sprin Aportion of the interlocking'projecting modate the short tubes (1, as shown. It will be seen that by this construction I am. enabled to produce a butt-hinge that will always keep in the closed position, or, by reversing the spring, the hinge willbe held in anopen position. The spring can be readily applied or removed from the hinge, as required,

WVhat I claim as my invention is 1. A hinge having groovesformed in its two leaves and a fiat springinserted therein, substantially as set, forth.

2. The leav'esA A of a hinge, each having allythat fits around the.

a groove 'orre'cess formed therein, in co1nbination-with the fiat spring D, enlarged at each and tube-d, in comhina in the'center let into grooves orr recesses,-as

pieces are cut away to accointion with a hinge h'aving recesses to receive same, substantially as shown anddescribed. In testimony'whcreof I have signed my name to this specification, in the two subscribing witnesses, on this May,A. I). 1889. l'IOSEA -VV. LIBBE'lz. Witnesses:

In Fig. 2 [have shown the hinge-provided with a flat. spri-ngyat its upper end; -but, if 1 UHAS. STEELE; EDWIN PLA NTA.

presence of 29th day of 

